Related Experiment Video
Updated: Apr 28, 2026
10:24
Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars
Published on: November 1, 2018
6.0K
Ductility and strength reduction factors for degrading structures considering cumulative damage
Edén Bojórquez1, Sonia E Ruiz2, Alfredo Reyes-Salazar1
1Facultad de Ingeniería, Universidad Autónoma de Sinaloa, Calzada de las Américas y Boulevard Universitarios S/N, Ciudad Universitaria, 80040 Culiacán Rosales, SIN, Mexico.
Thescientificworldjournal
|June 3, 2014
Summary
This study assesses how cumulative damage affects the strength needs of degrading structures. It evaluates target ductility and strength reduction factors for seismic design, offering recommendations for earthquake-resistant structures.
Area of Science:
- Structural Engineering
- Earthquake Engineering
- Materials Science
Background:
- Degrading structures are susceptible to cumulative damage during seismic events.
- Understanding the impact of this damage on strength requirements is crucial for seismic design.
Purpose of the Study:
- To assess the effect of cumulative damage on the strength requirements of degrading structures.
- To evaluate target ductility and corresponding strength reduction factors for seismic design.
Main Methods:
- Utilizing the Park and Ang index to establish ductility reduction.
- Employing Bojórquez and Rivera's models for structural property degradation.
- Analyzing five sets of ground motions, primarily from California.
Main Results:
- Quantified the reduction in ductility due to cumulative damage.
- Determined reduced strength reduction factors for degrading structures.
- Provided insights into key parameters for seismic design.
Conclusions:
- Cumulative damage significantly influences the strength requirements of degrading structures.
- The study offers recommendations for incorporating cumulative damage effects into seismic design practices.
- Results aid in developing more resilient earthquake-resistant structures.
More Related Videos
Related Concept Videos
01:22Design Consideration
680
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
The factor of safety is another key...
680
01:25Yield Criteria for Ductile Materials under Plane Stress
836
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
836
01:24Stress-Strain Diagram - Ductile Materials
2.5K
The stress-strain relationship in ductile materials such as structural steel or aluminium is intricate and progresses through several stages. When a specimen is loaded, it initially exhibits a linear length increase, depicted by a steep straight line on the stress-strain diagram. It indicates the material is elastically deforming and will return to its original shape once unloaded. However, when a critical stress value is reached, plastic deformation begins. This stage sees substantial...
2.5K
01:14Plastic Deformations
739
It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
739
01:19Plastic Deformations
661
Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
661
01:21Plastic Behavior
809
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
809